package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserService userService;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatProperties weChatProperties;

    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //1解析出来code授权码
        //HttpClientUtils.sendGet(url,param);//url：路径  param：map集合参数列表
        Map<String, String> map = new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret", weChatProperties.getSecret());
        map.put("js_code", userLoginDTO.getCode());
        map.put("grant_type", "authorization_code");
        String json = HttpClientUtil.doGet("https://api.weixin.qq.com/sns/jscode2session", map);//发送请求得到的json数据
        //解析json数据
        // 解析json的新方法 JSON.parseObject(json);
        JSONObject jsonObject = JSON.parseObject(json);//将json数据转换为JSONObject json对象
        // 获取openid
        String openid = jsonObject.getString("openid");
        //判断json对象中是否有openid
        //校验成功则得到openid
        if (openid == null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //2根据openid查询数据库，判断当前用户是否为新用户
        User user = userMapper.getByOpenid(openid);
        if (user == null){//新用户
            user = new User();
            user.setOpenid(openid);
            user.setCreateTime(LocalDateTime.now());
            userMapper.insert(user);
        }
        //不为空，则不是新用户 直接返回
        return user;
    }
}
